CVE-2018-16841

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Source
https://cve.org/CVERecord?id=CVE-2018-16841
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-16841.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2018-16841
Downstream
Related
Published
2018-11-28T14:29:00.347Z
Modified
2026-07-08T05:52:20.883326575Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call tallocfree() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with tallocfree() and directly calls abort(), terminating the KDC process.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "12.04"
                },
                {
                    "last_affected": "12.04"
                },
                {
                    "introduced": "14.04"
                },
                {
                    "last_affected": "14.04"
                },
                {
                    "introduced": "16.04"
                },
                {
                    "last_affected": "16.04"
                },
                {
                    "introduced": "18.04"
                },
                {
                    "last_affected": "18.04"
                },
                {
                    "introduced": "18.10"
                },
                {
                    "last_affected": "18.10"
                }
            ],
            "cpes": [
                "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING",
            "vendor_product": "canonical:ubuntu_linux"
        },
        {
            "extracted_events": [
                {
                    "introduced": "9.0"
                },
                {
                    "last_affected": "9.0"
                }
            ],
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING",
            "vendor_product": "debian:debian_linux"
        }
    ]
}
References

Affected packages

Git / github.com/samba-team/samba

Affected ranges

Type
GIT
Repo
https://github.com/samba-team/samba
Events
Introduced
b85f6018c803fb9aad82820d4b5505179ec5bac3
Fixed
b7d190f89d7674cf58a02486fa9887d393918611
Introduced
5a9d09fee44052e18ce241ec28f78498d2e20d73
Fixed
cd870beb978a334b948c6992059540c864dd2540
Introduced
4fc4ae2924aaa2fc184b7385069274526fa8a4c2
Fixed
40c057c900a9367e8020c943d29547ea8942212f
Database specific 
{
    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.3.0"
        },
        {
            "fixed": "4.7.12"
        },
        {
            "introduced": "4.8.0"
        },
        {
            "fixed": "4.8.7"
        },
        {
            "introduced": "4.9.0"
        },
        {
            "fixed": "4.9.3"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

ldb-1.*
ldb-1.3.3
ldb-1.3.4
ldb-1.3.6
ldb-1.4.3
samba-4.*
samba-4.8.0
samba-4.8.1
samba-4.8.2
samba-4.8.3
samba-4.8.5
samba-4.8.6
samba-4.9.0
samba-4.9.1
samba-4.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-16841.json"